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User Manual
23
Signaling and Pin definition of LINK DOWN interface:
Pin number
Signal
Explanation
3 TXD Rx
of
RC3000
7 RXD Tx
of
RC3000
4,8
GND
Ground of RC3000
d. Definition of balanced RC3000-4E1 E1 interface:
Balanced E1 interface is RJ45 interface, and the Signaling and Pin definition are:
Pin number Signal
Explanation
1
OUT+
Positive Tx of balanced E1 interface
2
OUT-
Negative Tx of balanced E1 interface
4
IN+
Positive Rx of balanced E1 interface
5
IN-
Negative Rx of balanced E1 interface
5.2
Function of RC3000-SUB-DS
FXS is a user audio card with feed and feed ring and can be connected to exterior line interface of
FBX. There are 8 channels of a FXS and the channel number is decided by hardware, unchangeable.
Two RJ45 interfaces make up of the 8 channels (each RJ45 interface has four channels). Definition
of RJ45 interface is as follows:
Channel 1
2
3
4
Pin No.
RJ45-1, 1T,2R
RJ45-1, 3T,4R
RJ45-1, 5T,6R
RJ45-1, 7T,8R
Channel 5
6
7
8
Pin No.
RJ45-2, 1T,2R
RJ45-2, 3T,4R
RJ45-2, 5T,6R
RJ45-2, 7T,8R
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
Figure 5-4
RJ45-1 RJ45-2
